diff --git a/scripts/generate_features.pl b/scripts/generate_features.pl
index 6b1dcbf..b99c637 100755
--- a/scripts/generate_features.pl
+++ b/scripts/generate_features.pl
@@ -51,7 +51,7 @@
 
 $/ = $line_separator;
 
-open(CONFIG_H, '<:crlf', "$include_dir/config.h") || die("Failure when opening config.h: $!");
+open(CONFIG_H, '<:crlf', "$include_dir/mbedtls_config.h") || die("Failure when opening mbedtls_config.h: $!");
 
 my $feature_defines = "";
 my $in_section = 0;